Meanwhile I made the arrow blue, since the Installer's icon is also mainly blue. I also moved the harddisk down to improve the silhouette and added a soft shadow for the arrow (questionable, maybe a hard shadow would be more in line). Fixed in hrev34264.

Forgot to mention, I also removed a whole bunch of unused/duplicate styles, although I believe IOM will not store unused ones in HVIF. But it does no duplicate check at least. When merging icons, one has to watch out for this and cleanup, at least for the time being... :-)